Am Donnerstag, dem 28.04.2022 um 23:31 +0200 schrieb Marek Vasut:

Per toshiba,tc358767.yaml DT binding document, port@2 the output (e)DP port is optional. In case this port is not described in DT, the bridge driver operates in DPI-to-DP mode. The drm_of_find_panel_or_bridge() call in tc_probe_edp_bridge_endpoint() returns -ENODEV in case port@2 is not present in DT and this specific return value is incorrectly propagated outside of tc_probe_edp_bridge_endpoint() function. All other error values must be propagated and are propagated correctly.

Return 0 in case the port@2 is missing instead, that reinstates the original behavior before the commit this patch fixes.

Fixes: 8478095a8c4b ("drm/bridge: tc358767: Move (e)DP bridge endpoint parsing into dedicated function") Signed-off-by: Marek Vasut marex@denx.de

Reviewed-by: Lucas Stach l.stach@pengutronix.de

Cc: Jonas Karlman jonas@kwiboo.se Cc: Laurent Pinchart Laurent.pinchart@ideasonboard.com Cc: Lucas Stach l.stach@pengutronix.de Cc: Marek Vasut marex@denx.de Cc: Maxime Ripard maxime@cerno.tech Cc: Neil Armstrong narmstrong@baylibre.com Cc: Robert Foss robert.foss@linaro.org Cc: Sam Ravnborg sam@ravnborg.org

---

drivers/gpu/drm/bridge/tc358767.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/bridge/tc358767.c b/drivers/gpu/drm/bridge/tc358767.c index 0336b14d9e94..ad1d6e383966 100644 --- a/drivers/gpu/drm/bridge/tc358767.c +++ b/drivers/gpu/drm/bridge/tc358767.c @@ -1955,7 +1955,7 @@ static int tc_probe_edp_bridge_endpoint(struct tc_data *tc) tc->bridge.ops |= DRM_BRIDGE_OP_DETECT; tc->bridge.ops |= DRM_BRIDGE_OP_EDID;

• return ret;

• return 0;

}

static int tc_probe_bridge_endpoint(struct tc_data *tc)